Guardian: Car adverts should carry prominent climate change “health warnings” akin to those on cigarette packets, according to a Labour MP who is critical of the government’s progress on climate change legislation. Colin Challen MP, who is chair of the all-party climate change group, said that government warnings on car ads might force car companies to be more “honest”. He said many cars are promoted as being “greener” when they are actually environmentally damaging. He said the car …